Terminal-bending tool for armatures.



E. J. TOMLINSONn TERMINAL BENDING TOOL FOR ARMATURES. APPLICATION FILED DEC. ll. ISM-6, 133 59 Pmmd Sept. 4,1912

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6 0M WM E. J. TOMLINSON. TERMINAL BENDING TOOL FOR ARMATURES.

APPLICATION FILED DEC. 11, I916- Patented Sept. 4, 1917.

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Nrrnip eras PATENT onnron EDWARD J. TOMLINSON, F DAYTON, OHIO, ASSIGNOR, TO VINCENT G". PIE,- Oil DAYTON, OHIO.

TERMINAL-BENDING TOOL FOR ARMATURES.

naaaeaa Specification of Letters Patent.

' Patented Sept, 41, 1il '27.,

Application filed December 11, 1916. Serial No. 136,335.

To all whom it may concern Be it known that I, EDWARD J. TOMLIN- ing at Dayton, in the county of Montgomery and State of Ohio, have invented certain new and useful Improvements in Terminal-Bending Tools for Armatures, of which the following. is a specification.

One of the objects of my invention is to provide a tool by means of which the commutator ends of armature conductors may all, simultaneously, and uniformly, be bent into their respective positions, in pairs, for immediate connection with commutator seg ments.

Another object of my invention is to provide means which will leave the terminals of the conductor ends all in planes parallel with the axis of the armature, ready, with p out further manipulation, for insertion in the slots prepared for them in the respective commutator segments.

Other and further objects of my invention will become readily apparent, to persons skilled in theart, from a consideration of the followingfdescription when taken in conjunction with the drawings, wherein Figure l is an end elevation of one embodiment of the wire bending tool.

Fig. 2 is a central, vertical section showing the tool as applied to an armature before the conductor terminals are circumferentially displaced into pairs, as shown in Fig. 3.

Fig. 3 is a portion of an armature core 7 showing certain of the terminals paired as by 1the operation of my improved bending too In all the views the same reference characters are employed to indicate similar parts. 7

Bar wound, or single turn armatures, in which the conductor terminals are bent from axial positions into new circumferentially directed planes to form appropriate pairs for connection with the respective segments of the armature commutator, require the services of relatively high paid experts to accomplish this operation, when such work has been done by hand, as heretofore, and when each of the terminal wires are separately manipulated.

The armature terminal ends must be bent uniformly, without vertical deviation from their initial circumferential planes so as not to occupy any greater space in the aggregate, in their deflected positions, than when in their initial, axial positions, to avoid danger of short circuiting.

In the accompanying exemplification, which I have chosen to clearly disclose my invention, 5 is a portion of a core of an armature, provided with the usual, a) iallyextending perforations or slots, near its peripheral surface for reception of the armature conductors of which 6 and 7 are the terminal ends. The terminals 6 and 7 of the armature conductors, are of uniform lengths, as shown in Fig. 2, and constitute the conductors that are to be connected to the commutator segments, as more elearly shown, in their paired relation, in Fig. 3. The number of perforations or slots extendingaxially through the core 5, of the armature, correspond with the number of perforations or apertures shown in the tool, as

indicated in Fig. 1, and when the tool is ap plied to the armature, as shown in Fig. 2, the conductor ends 6 and 7, are threaded through these apertures.

One embodiment of the tool consists of a disk 8 extending from a hub 9, that is shown placed over the armature shaft 10.

The disk 8 is surrounded by a ring 8' that is rotatable on the edge of the disk, being held in place by the projections 1111,

from the disk 8,'and by the ring 12, which projects inwardly and overlies the pro ections 1111 and is secured to the ring 8 by screws 1313. At the base of the strengthening ribs 1414, which extend from the hub 9 and terminate in the disk 8 are laterally and radially extending, preferably, integral ribs 15, which-terminate in the projections 11, that underlie the clamping ring 12. A handle 16 projects radially from one of the ribs 15, and another similar handle 17,projects radially from the mug 8. By grasping these handles the disk 8 and the ring 8 may be circumferentially moved or rotated, about the same axis. Other means than the handles, may, however, be used to relatively rotate the bending members of the tool. Extending 1nwardly from the peripheral surface of the disk 8 are a series of depressions or slots 18, which, with the radial depressions or slots 19, in the ring 8, form composite openings vwhich substantially correspond in number and form with the axial, w1re receiving openings, formed in the armature core through or in which to insert the electric conductors 6 and 7.

In the use of the tool, it is preferably placed upon the armature shaft 10, the desideratum being that it must be supported in proper axial relation with the core 5 of the armature. When it is moved toward the core, the conductors 6 and 7 arethreaded into the respective composite slots 18, 19, until the terminal ends of the conductors pass entirely through the disk 8 and ring 8' and preferably, somewhat beyond, as shown in Fig. 2. When it' is desired to displace or move the conductors, in the lower portions of the slots of the armature core, rear- Wardly, to the same extent that the conductors in the upper portion of the slots in the armature core are moved forwardly, as

shown in Fig. 3, then, the handles 16 and 17 are grasped and pressure is applied to push one handle in one direction and to pull the other in the opposite direction until the terminals 6 and 7, are brought into proper radial planes to thus appropriately pair the conductor terminals of the respective coils. In deflecting the conductors from their substantially true axial planes, in this manner, there will be some slip of the ends in the slots 18 and 19, but the terminal ends 6' and 7 respectively, will be retained in axial planes by the neat fit of the respective slots, so as more conveniently to be connected to the commutator terminals. After the terminals have thus been deflected, to the proper extent for the object desired, the tool is moved axially of the shaft 10, to remove it therefrom, leaving thearmature and its conductors ready to be connected to the commutator segments.- The commutator is then slipped on the shaft 10 in place of the tool, when the ends 6 and 7 of the respective conductors, willv register with, and be received by, the slots provided in the commutator segments, for this purpose.

Having described my invention, what I claim is 1. A tool, of the character described, comprising two concentric, independently rotatable parts, each provided with pluralities of armature-tenninal-engaging means, said means, on the two parts, being movable into and out of radial register.

2. A tool of the character described, comprising two concentric, independently rotatable parts, each provided with pluralities of annature-terminal-engaging means, said means, on the two parts, being revoluble in opposite directions into and out of radial place said terminals in radial planes for appropriate pairs.

4. A tool, for bending armature conducting terminals circumferentially into planes to contain appropriate pairs for connection with the armature commutator, which consists of two parts, independently rotatable about a common axis, each part having a suitable number of terminal-engaging means forregistering with the number of armature terminals, said engaging parts adapted to rigidly hold the extreme ends of said terminals in axial planes, parallel with the armature axis, for connection with commutator segments, and means to rotate said parts to circumferentially displace the intermediate portions of said terminals from initial, axially-parallel planes to lie in spirally arranged planes.

5. A tool, comprising two concentric independently revoluble parts, both parts provided, in their meeting edges with a plurality of registering slots, each of which is designed to receive an armature terminal and to hold the slot-included parts of said terminals in axially parallel planes, and means to relatively rotate said tool-parts to circumferentiall displace said terminals, with the axially isposed ends thereof in radial planes to constitute appropriate pairs.

. 6. A tool, comprising a disk arranged t be concentrically secured to an armature core; a ring revoluble about the disk, said disk and ring having in their meeting edges, slots, which, when in register with each other substantially register with the commutator terminals of an armature, and means for relatively rotating said disk and ring, whereby to circumferentially displace said terminals into appropriate radial planes for connection with said commutator segments.

In testimony whereof I hereunto set my hand in the presence of two subscribing w1t- 

